7mm PDW

We've been having a discussion about PDWs here:

I am just quickly posting my proposal, which is to use the Belgium VBR PDW with a cartridge that is a .460 Rowland necked down and shortened to accept this bullet: 7mm PDW

Which gives me these ballistics at 305 MPa pressure. Decent chance to hit somebody @ 150m and supersonic suppressive fire out to ~350m

 Tabular trajectory data at Std.ICAO Atmosphere
-------------------------------------------------------------------------------------
 Gun / Ammunition : 7 mm PDW - 45 Rowland
 Bullet           : 7 mm PDW
 Bullet weight    : 73 grains or 4.73 Grams
 Muzzle velocity  : 631 m/s
 Crosswind speed  : 4 m/s
 Ballistic Coefficient(s) (G1):
 C1=0.250@V>680 m/s;
 C2=0.240@V>510 m/s;
 C3=0.230@V>340 m/s;
 C4=0.180@V>170 m/s;
 C5=0.160@V>0 m/s;


 Optimum trajectory information :
 Optimum sight-in range (X) = 102 m
 with max. ordinate above LOS at range (M)= 63 m
 and max. point blank range (P)= 117 m.
-------------------------------------------------------------------------------------
 Sight-in clicks, 1 click = 1.0 cm/100 m or 0.394 in/100 m
 Height of sight above bore axis = 3.175 cm or 1.25 inch
 Gun is zeroed-in at 100 m,
 by sighting-in at level firing
-------------------------------------------------------------------------------------
 Range  Velo Time of  Energy   Path    Deflection    Total  Sight correction  Target
        city  flight            to    at crosswind    drop   for setting new   lead
                                LOS    of 4.5 m/s              zero range     10 m/s
-------------------------------------------------------------------------------------
·Meter   m/s     s    Joule     cm     cm      MOA     cm    Clicks     MOA      m  ·
-------------------------------------------------------------------------------------
|    0   631  0.0000    941    -3.2    0.0   -----     0.0   ------    -----    0.00
|   25   604  0.0400    863    +0.3    0.2    0.25     0.8     -1.3    -0.43    0.40
|   50   578  0.0819    790    +2.2    1.2    0.81     3.2     -4.3    -1.49    0.82
M   62   566  0.1029    756    +2.4    2.1    1.16     5.0     -3.9    -1.33    1.03
|   75   552  0.1264    722    +2.1    3.4    1.54     7.5     -2.8    -0.97    1.26
X  100   528  0.1733    660     0.0    6.6    2.27    13.9      0.0     0.00    1.73
P  116   513  0.2044    622    -2.5    9.2    2.72    19.1     +2.2    +0.75    2.04
|  125   504  0.2223    601    -4.4   10.8    2.97    22.5     +3.5    +1.20    2.22
|  150   481  0.2732    546   -11.1   15.8    3.63    33.5     +7.4    +2.54    2.73
|  175   458  0.3260    495   -20.3   21.7    4.27    46.9    +11.6    +3.98    3.26
|  200   436  0.3815    450   -32.4   28.8    4.96    63.3    +16.2    +5.57    3.82
|  225   416  0.4405    409   -48.0   37.5    5.73    83.2    +21.3    +7.33    4.41
|  250   397  0.5022    373   -67.2   47.4    6.51   106.6    +26.9    +9.24    5.02
|  275   380  0.5664    341   -90.1   58.4    7.30   133.8    +32.8   +11.26    5.66
|  300   364  0.6337    313  -117.4   70.7    8.11   165.4    +39.1   +13.46    6.34
|  325   350  0.7038    290  -149.4   84.3    8.92   201.7    +46.0   +15.81    7.04
|  350   337  0.7766    269  -186.4   99.2    9.74   242.9    +53.3   +18.31    7.77
-------------------------------------------------------------------------------------
M = Peak vs. L.O.S, X = Set Zero, P = Max. Point Blank Range
Elevation above Angle of Site (0.0 deg.)  = 0.0977 deg.

Technique, technique, technique, technique

I spent several hours today with a friend working on zeroing the scope again and again and working on my technique. Several things i have learned over the last few days:

• start where the scope is too close and move backwards
• have your head upright - if need be, bring your chin down on the stock and then move downwards
• find the brightest spot with no shades at all. The two above techniques are basically just helps with that

I have also finally sanded down the part of the stcok where the barrel was touching on the left hand side, so now it is finally free. I managed to get some nice groups today, so I am beginning to feels mildly optimistic about my shooting. I definitely feel less adrift. I ended the day on a group of three around the Bull's Eye - covering maybe the area of a 0.5€ coin.

Accutrigger adjustment

I finally disassembled the gun for the first time just now and had a look at adjusting the trigger pull downwards. Again this is an incredibly primitive assembly. One supposedly needs a specialised tool but a small screwdriver did the job nicely (one needs to turn a spring in a thread). I keep being amazed how Savage get such precision with such primitive means. But it explains why they are affordable.

The trigger pull is now way down and I am looking forward to trying it out.

Instructions can be found here

Shotgun!

My club had a second hand left hand semi auto Remington for sale which I took out for a test drive and could not resist. So I have put down money on it and will be very slowly acquiring it. This is waay cheaper than i foresaw acquiring a decent semi auto shotgun, which is what I wanted.

On scoping again

Well, I thought I had understood it - I hadn't. Today I think I finally got a clue. My score improving by 30 points would seem to be an indicator.

Here is what I learned:

Find the spot in the distance from the scope where you have a clear picture. No back rim of haze around the image, plain clear image. This is more straightforward than one thinks. Where I fell down is that I did not realize that if one goes too far forward things will start to haze up again. I used to keep a bit of a haze around the image because I thought that allowed me to keep things centred. Well, it didn't. keep a clear image in the scope. If it is too dull, go back, if it has rims, go forward.

I should now be able to, with a bit more practice, reliably shoot and 8 or higher. at 50m that is a 1" circle, good enough for shooting bunnies as I am told. Also I am a bit shocked. German hunters claim that 'a beermat with 3 shots at 100m' is good enough. I'd prefer the 1€ coin, thanks a lot. After all we want to reliably kill.

The Savage has been fixed.

Oh and boy does she shoot. As to the problem: turns out that the extractor consists of cheap pressed pieces. A mechanical wizard friend of mine got her working in two hours and now she extracts without any major problems. I fired ~180 rounds last Sunday and had to maybe repeat again for 5 of them and had to extract one with the knife. This is very acceptable.

She is also by now proudly wearing a moderator and a guns sling. I'll post a piccie shortly.

I also had gotten confused about how to use a scope properly which got explained to me last Sunday and wohei all of a sudden my scores are improving majorly :D

I have also gotten an invite to go after rabbits in Wexford and am working on shooting permissions at a colleague's family's neighbour. Chuffed I am.

Experiences with my Savage

I received my Savage in June. I absolutely love it. I shoot better with it than with the club's benchrest rifles. I have not used it much, mostly because the extractor doesn't work, which results in pulling 90% of cartridges fired from the barrel with a screwdriver. I have a kit sitting at home to replace that and then we will see.

I am told that that is a not uncommon problem with Savage. I am willing to accept that for the overall precision, unbeatable trigger.

I have not yet bought a moderator as I don't have a hunting opportunity yet.

OkOK, 338-06 AI it is ...

I hope  have bored everybody to tears by now ;) While looking at cartridges I kept returning to the .338-06 Ackley Improved and I think that'll be the one. Since I want a custom rifle anyway it is no major hassle and it gives a bit more oomph, especially with single base powders. These I want in order to avoid muzzle flash when shooting at night. why that? Well the problem with muzzle flash is not so much that you get seen, but that you get blinded and can't actually see your prey for a few seconds.

Also this gives me > 750 m/s out to more than 250 m which really should be sufficient. 750 m/s is the speed that the KJG needs in order to open properly.

Also the .338-06 AI uses a long action which means that since I want a Savage action I can simply get a 110 for which aftermarket stocks are plentyful.

more thoughts on the rifle

I am really beginning to think that I will be a Savage man (as opposed to a savage man). I like the ideas, the price, the reputed accuracy. And the Accutrigger. So when I get a full size rifle I am thinking a stainless steel action, left hand thumb hole stock, target or varmint trigger and in one of the endless selection of 338 cartridges. Have Steve Bowers install one of his over the barrel moderators and be done with it. That mod is probably going to cost more than the whole rifle, but ah well.

As for cartridges another one has joined the option list, which is the 338-284 again possibly as AI. I have not yet found cartridge data for my version of QL, so my usual data cemetery will haver to wait a bit.

cheap custom rifle

I actually handled a rfile of the same model as I have ordered for the first time this weekend, and got to dry fire it once. The Savage Accutrigger is sweet piece of kit. This has got me thinking. I have kinda made up my mind that I want a custom rifle as my first fullbore rifle. This was looking like 2,500 € from Mayerl with a blueprinted Remington 700 system, match trigger, Lothar Walther barrel (I think), Coate varmint stock and moderator.

After handling that rifle I started thinking. What if I were to get a Savage 116 action, a 338-06 barrel and a Coate or Ross stock? Then add a PES over the barrel moderator. Given the ridiculously low prices of Savage parts this should be affordable. I'm going to have to hand import a lot of this stuff though.

and the winner is: the .338-06 A-Square!

I get more muzzle velocity out of less powder:

**** Input data:                         Date: 4-Oct-2009     Time: 15:46:16
Cartridge................. = .338-06 A-Square
Projectile type........... = 8.58, 9., Möller 8,5 mm KJG S with boattail
 
Max.avg.pressure(Piezo A-S)= 448 MPa     Shot start / init pressure = 15 MPa
Projectile weight       (g)= 9.007       Groove caliber         (mm)= 8.59
Length of cartridge    (mm)= 84.84       Length of case         (mm)= 63.35 
Case capacity       (cu.cm)= 4.48        Length of projectile   (mm)= 30.48 
Length of barrel       (mm)= 560 
**** Values calculated:
Seating depth          (mm)= 8.99        Volume displaced    (cu.cm)= 0.52 
Comb.chamber volume (cu.cm)= 3.96        Projectile travel      (cm)= 50.56 
**** Input data:
Propellant type........... = ADI AR 2219
Charge weight...........(g)= 3.732       Load density......(g/cu.cm)= 0.942
Heat of Explosion   (kJ/kg)= 4000        Ratio of spec. heats cp/cv =  1.231 
Solid density     (g/cu.cm)= 1.57        Weighting factor...........= 0.50
Burning rate factor Ba(1/s)= 0.67        Pro-/degressivity factor a = 0.4497 
Burning limit ......... z1 = 0.5         Combust.Chamber Vb(m³)= 3.962779E-6
Factor.................. b = 1.6         X-S.Area of Bore A(m²)= 5.695E-5
Bulk density      (g/cu.cm)= 0.950       Projectile mass mp(kg)= 9.007E-3
Loading ratio           (%)= 99.1        Projectile travel x(m)= 5.0563E-1
 
**** Results calculated:
Maximum pressure ........ =  430 MPa     Way of projectile at Pmax =  37.1 mm
Muzzle velocity  ......Ve =  999 m/s     Muzzle pressure .......Pe =  60 MPa
Project. energy at muzzle =  4493 J      Fraction of powder burnt  = 99.7  %
Projectile travel time from 10% Pmax to muzzle = 0.88 ms

updates on own rifle

I have finished joining a gun club, it is Hilltop. I will probably not end up buying my equipment there, as I am particular about stuff and they don't appear to be good at accommodating stuff that is out of the ordinary. Also their prices are high. I got my gun safe 60 € cheaper elsewhere.

I am ending up buying not a .17 HMR, but a .22 lr, since not a lot of ranges in the country are actually certified for anything bigger than .22 lr. hence my rifle is the Savage Mark II BTVS. I have the serial number, most of the other stuff, 2 references - BTW they will likely be called, so one should warn them ;) I was bemused to read in the shooting boards how people were outraged that their references were actually called and. Guys it is called 2reference" not "names of parson or teacher I know the name and address of".

Oh and I am buying the gun in Norn Iron, since a) the guy could deliver faster and b) it is cheaper, £580 vs €800 from a shop in Cavan.

Cruelty to animals

I can't say this on the hunting boards but let me be clear on this: I consider hunting on horseback "par force" or coursing with hounds to be cruelty to animals. I despise it and I will not be solidarical with people who do it. I have recently been directly asked to be that and no. Just because you can't see the tortured creature I am not obliged to be solidarical with your actions. I despise this kind of hunting from the bottom of my heart.

This has got me thinking

I appears that Nitrochemie do not offer powders for reloaders any more. I will try and verify that tomorrow though. I have calculated two loads for the .338 Federal and the .338 RCM (which I had to fudge on the basis of the .300 RSAUM, since my QuickLoad doesn't have that cartridge yet).

**** Input data:                         Date: 4-Oct-2009     Time: 13:25:07
Cartridge................. = .338 RCM Fudge II - from .300 RSAUM
Projectile type........... = 8.58, 9., Möller 8,5 mm KJG S with boattail
 
Max.avg.pressure(Piezo SAA)= 448 MPa     Shot start / init pressure = 15 MPa
Projectile weight       (g)= 9.01        Groove caliber         (mm)= 8.59
Length of cartridge    (mm)= 71.76       Length of case         (mm)= 50.88 
Case capacity       (cu.cm)= 4.67        Length of projectile   (mm)= 30.48 
Length of barrel       (mm)= 560 
**** Values calculated:
Seating depth          (mm)= 9.6         Volume displaced    (cu.cm)= 0.55 
Comb.chamber volume (cu.cm)= 4.12        Projectile travel      (cm)= 51.87 
**** Input data:
Propellant type........... = IMR 4895
Charge weight...........(g)= 3.731       Load density......(g/cu.cm)= 0.905
Heat of Explosion   (kJ/kg)= 3860        Ratio of spec. heats cp/cv =  1.2431 
Solid density     (g/cu.cm)=  1.58       Weighting factor...........= 0.50
Burning rate factor Ba(1/s)= 0.61        Pro-/degressivity factor a = -0.15 
Burning limit ......... z1 = 0.6         Combust.Chamber Vb(m³)= 4.121772E-6
Factor.................. b = 1.6         X-S.Area of Bore A(m²)= 4.7291E-5
Bulk density      (g/cu.cm)= 0.890       Projectile mass mp(kg)= 9.007E-3
Loading ratio           (%)= 101.7       Projectile travel x(m)= 5.1871E-1
 
**** Results calculated:
Maximum pressure ........ =  430 MPa     Way of projectile at Pmax =  43.5 mm
Muzzle velocity  ......Ve =  978 m/s     Muzzle pressure .......Pe =  71 MPa
Project. energy at muzzle =  4310 J      Fraction of powder burnt  = 99.9  %
Projectile travel time from 10% Pmax to muzzle = 0.96 ms

and

**** Input data:                         Date: 4-Oct-2009     Time: 13:25:07

Cartridge................. = .338 RCM Fudge II - from .300 RSAUM

Projectile type........... = 8.58, 9., Möller 8,5 mm KJG S with boattail

Max.avg.pressure(Piezo Wil)= 440 MPa     Shot start / init pressure = 15 MPa
Projectile weight       (g)= 9.01        Groove caliber         (mm)= 8.59
Length of cartridge    (mm)= 71.12       Length of case         (mm)= 51.16 
Case capacity       (cu.cm)= 4.67        Length of projectile   (mm)= 30.48 
Length of barrel       (mm)= 560 
**** Values calculated:
Seating depth          (mm)= 10.51       Volume displaced    (cu.cm)= 0.55 
Comb.chamber volume (cu.cm)= 4.12        Projectile travel      (cm)= 51.93 
**** Input data:
Propellant type........... = Norma 200
Charge weight...........(g)= 3.031       Load density......(g/cu.cm)= 0.969
Heat of Explosion   (kJ/kg)= 3850        Ratio of spec. heats cp/cv =  1.239 
Solid density     (g/cu.cm)=  1.58       Weighting factor...........= 0.50
Burning rate factor Ba(1/s)= 0.555       Pro-/degressivity factor a =  6.5 
Burning limit ......... z1 = 0.3         Combust.Chamber Vb(m³)= 3.126928E-6
Factor.................. b = 2.2         X-S.Area of Bore A(m²)= 5.695E-5
Bulk density      (g/cu.cm)= 0.952       Projectile mass mp(kg)= 9.007E-3
Loading ratio           (%)= 101.8       Projectile travel x(m)= 5.1934E-1
 
**** Results calculated:
Maximum pressure ........ =  430 MPa     Way of projectile at Pmax =  32.1 mm
Muzzle velocity  ......Ve =  948 m/s     Muzzle pressure .......Pe =  46 MPa
Project. energy at muzzle =  4047 J      Fraction of powder burnt  = 100  %
Projectile travel time from 10% Pmax to muzzle = 0.92 ms

So this is pretty much 30m/s more muzzle velocity in exchange for a bigger cartridge, possible problems with sound moderation and maybe greater difficulties getting a licence. OTOH this increases the usable range of the KJG from 200m to just over 250m.

and more on cartridges - this time the .338 RCM

Well, me being me, when I had my rummage around for .338 cartridges, I stumbled upon the .338 Ruger Compact Magnum. Regardless of some silly marketing blahblah ("same power as a .338 Winchester Magnum, but from a 20" barrel" - yeah right) it turns out that it has basically the same volume as the .338-06, so we should still be able to use it with a 25mm over-the-barrel moderator, but it is a short action cartridge, which will not only potentially allow for a shorter barrel (which I am not usually a fan of, but let's not forget that a moderator adds something like 15 to 20cm to the length of the barrel), but also makes a "short, fat magnum", which means better combustion than in a long catridge. So quite possibly one can get a few more m/s out of it. And the added effective barrel length of a short action doesn't hurt my feelings either.

On  the other hand, the .338-06 gets a similar performance with lower pressures. This is from Hodgdon, since my version of QuickLoad doesn't have the .338 RCM

more reasons for the .338-06 A-Square

What are my other considerations for the .338-06 A-Square?

Well, there is brass available for it. That meas you don't have to either buy factory ammo and reuse the cartridges or fireform other cartridges. The first option leaves you with ammo you don't want and is expensive. The second option has problems when crossing borders as you are carrying ammo that has a different bottom stamp to the calibre of your firearm or to what it says on your licence.

And there is brass available from Norma, which has a very good name and does not have to go through any preparation stages before being loaded for the first time. This is not the case for the 3rd potential candidate: the .338 Ruger Compact Magnum (which is not in my version of quickload).

or maybe something a bit bigger? .338-06 A-Square

The fact that any kind of load that achieves decent speeds for the KJG leads to compressed loads in .338 Federal led me to looking for other options. Now I don't want a Magnum for 2 reasons.

1) I don't see any reason. I am not likely to shoot much further than 200m, so why would I need a Magnum?
2) I have found a full length moderator that basically looks like thicker barrel and has a diamter of 25mm, ie looks like a match barrel. This moderator at the moment can use a maximum of 30-06 Ackeley Improved, so I am hoping that the .338-06 will be usable. As that moderator involves drilling holes into the last 1.5" (make that 38mm) of the barrel the usable length goes down to 20.5", ie 520mm. Quickload still recommends Nitrochemie A/S 0300, so that is what I am using here.



**** Input data:                        Date: 26-Sep-2009     Time: 23:03:18
Cartridge................. = .338-06 A-Square
Projectile type........... = 8.58, 9., Möller 8,5 mm KJG S with boattail  

Max.avg.pressure(Piezo A-S)=448 MPa     Shot start / init pressure = 15 MPa
Projectile weight       (g)= 9.01       Groove calibre          (mm)= 8.59
Length of cartridge    (mm)= 84.84      Length of case          (mm)= 63.35 
Case capacity       (cu.cm)= 4.48       Length of projectile    (mm)= 30.48 
Length of barrel       (mm)= 520.7 
**** Values calculated:
Seating depth          (mm)= 8.99       Volume displaced    (cu.cm)= 0.52 
Comb.chamber volume (cu.cm)= 3.96       Projectile travel      (cm)= 46.63 
**** Input data:
Propellant type........... = Nitrochemie A/S 0300
Charge weight...........(g)= 3.592      Load density......(g/cu.cm)= 0.907
Heat of Explosion   (kJ/kg)= 3950       Ratio of spec. heats cp/cv =  1.2401 
Solid density     (g/cu.cm)= 1.62       Weighting factor...........= 0.50
Burning rate factor Ba(1/s)= 0.675      Pro-/degressivity factor a =  0.94 
Burning limit ......... z1 = 0.5        Combust.Chamber Vb     (m³)= 3.962196E-6
Factor.................. b = 1.7        X-S.Area of Bore      A(m²)= 5.695E-5
Bulk density      (g/cu.cm)= 0.944      Projectile mass mp     (kg)= 9.007E-3
Loading ratio           (%)= 96.0       Projectile travel x     (m)= 4.6634E-1
**** Results calculated:
Maximum pressure ........  =  420 MPa     Way of projectile at Pmax=  41.4 mm
Muzzle velocity  ...... Ve =  981m/s      Muzzle pressure .......Pe=  64 MPa
Project. energy at muzzle =  4336J      Fraction of powder burnt  = 100  %
Projectile travel time from 10% Pmax to muzzle = 0.85 ms


KJG needs at least 750 m/s to open properly, so that needs to be achieved at whatever range one intends to hit. As the below ballistics table shows, this lets me do that to slightly beyond 250m:

 Muzzle velocity  : 981 m/s
 Crosswind speed  : 0 m/s
 Ballistic Coefficient(s) (G1):
 C1=0.362@V>800 m/s;
 C2=0.307@V>400 m/s;
 C3=0.335@V>340 m/s;
 C4=0.272@V>300 m/s;
 C5=0.253@V>0 m/s;


 Optimum trajectory information :
 Optimum sight-in range (X) = 190 m
 with max. ordinate above LOS at range (M)= 113 m
 and max. point blank range (P)= 220 m.
-------------------------------------------------------------------------------------
 Sight-in clicks, 1 click = 1.0 cm/100 m or 0.394 in/100 m
 Height of sight above bore axis = 3.6 cm or 1.417 inch
 Gun is zeroed-in at 200 m,
 by sighting-in at level firing
-------------------------------------------------------------------------------------
 Range  Velo Time of  Energy   Path    Deflection    Total  Sight correction  Target
        city  flight            to    at crosswind    drop   for setting new   lead
                                LOS    of 0.5 m/s              zero range     10 m/s
-------------------------------------------------------------------------------------
·Meter   m/s     s    Joule     cm     cm      MOA     cm    Clicks     MOA      m  ·
-------------------------------------------------------------------------------------
|    0   981  0.0000   4336    -3.6    0.0   -----     0.0   ------    -----    0.00
|   25   958  0.0258   4132    -0.6    0.0    0.02     0.3     +2.2    +0.76    0.26
|   50   935  0.0522   3936    +1.8    0.1    0.04     1.3     -3.6    -1.25    0.52
|   75   912  0.0792   3749    +3.5    0.1    0.06     3.0     -4.7    -1.61    0.79
|  100   890  0.1069   3569    +4.5    0.2    0.08     5.4     -4.5    -1.53    1.07
M  118   874  0.1273   3444    +4.7    0.3    0.09     7.6     -3.9    -1.36    1.27
|  125   868  0.1353   3396    +4.6    0.4    0.10     8.6     -3.7    -1.27    1.35
|  150   847  0.1646   3231    +4.0    0.5    0.12    12.7     -2.6    -0.91    1.65
|  175   826  0.1947   3072    +2.4    0.7    0.14    17.6     -1.4    -0.48    1.95
X  200   805  0.2255   2919     0.0    1.0    0.17    23.4      0.0     0.00    2.25
|  225   782  0.2570   2754    -3.3    1.2    0.19    30.1     +1.5    +0.51    2.57
P  229   778  0.2621   2727    -4.0    1.3    0.19    31.2     +1.7    +0.59    2.62
|  250   758  0.2892   2590    -7.6    1.6    0.21    37.7     +3.0    +1.05    2.89
|  275   735  0.3224   2433   -12.9    1.9    0.24    46.4     +4.7    +1.62    3.22
|  300   712  0.3570   2283   -19.5    2.3    0.27    56.3     +6.5    +2.23    3.57
-------------------------------------------------------------------------------------
M = Peak vs. L.O.S, X = Set Zero, P = Max. Point Blank Range
Elevation above Angle of Site (0.0 deg.)  = 0.0772 deg.

.338 Federal

The .338 Federal is a nice "against the trend" development by Federal. All tests seem to agree that it is quite a deadly little cartridge, which is basically a necked up .308 Winchester. I had a few doubts about usability with KJG, which demands rather high speeds, but it looks good:

**** Input data:                         Date: 17-Sep-2009     Time: 01:21:09
Cartridge................. = .338 Federal
Projectile type........... = 8.58, 9., Möller 8,5 mm KJG S with boattail
 
Max.avg.pressure(Piezo Wil)= 415 MPa     Shot start / init pressure = 15 MPa
Projectile weight       (g)= 9.01        Groove caliber         (mm)= 8.59
Length of cartridge    (mm)= 71.12       Length of case         (mm)= 51.16 
Case capacity       (cu.cm)= 3.73        Length of projectile   (mm)= 30.48 
Length of barrel       (mm)= 560 
**** Values calculated:
Seating depth          (mm)= 10.52       Volume displaced    (cu.cm)= 0.61 
Comb.chamber volume (cu.cm)= 3.13        Projectile travel      (cm)= 51.94 
**** Input data:
Propellant type........... = Nitrochemie A/S 0300
Charge weight...........(g)= 3.04        Load density......(g/cu.cm)= 0.972
Heat of Explosion   (kJ/kg)= 3950        Ratio of spec. heats cp/cv =  1.2401 
Solid density     (g/cu.cm)=  1.62       Weighting factor...........= 0.50
Burning rate factor Ba(1/s)= 0.675       Pro-/degressivity factor a =  0.94 
Burning limit ......... z1 = 0.5         Combust.Chamber Vb(m³)= 3.126347E-6
Factor.................. b = 1.7         X-S.Area of Bore A(m²)= 5.695021E-5
Bulk density      (g/cu.cm)= 0.944       Projectile mass mp(kg)= 9.007E-3
Loading ratio           (%)= 103.0       Projectile travel x(m)= 5.1936E-1
 
**** Results calculated:
Maximum pressure ........ =  400 MPa     Way of projectile at Pmax =  32.7 mm
Muzzle velocity  ......Ve =  949 m/s     Muzzle pressure .......Pe =  48 MPa
Project. energy at muzzle =  4053 J      Fraction of powder burnt  = 99.8  %
Projectile travel time from 10% Pmax to muzzle = 0.92 ms

This looks like a nice starting load for this cartridge and it only slows down to < 750 m/s beyond 225 m which strikes me as OK. The BC of the short 8.5mm KJG are not overwhelming but still the ballistics look sufficient. Wants!

1st moves

Ok, I have become a member of a rifle and shooting club and thus fulfill the necessary requirement to procure a gun. I have had a look around for gunsafes and will talk to the landlady about putting one up. I know which gun I want and will soon put down a down payment on one. A freind of mine who owns land has agreed to sign for me that I can shoot on his land. Things are coming together ... Rabbits here I come!

I will go with the Savage mentioned further down with a moderator and work on getting the licence for hares as well. That should prove entertaining, since it may well be the first licence in the state that says that. I hope my super can be talked to. I have contact persons I can name for him to ring ...

Time for a rant

OK, there is a German term "Waidgerechtigkeit" which is nearly impossible to translate, but encompasses doing things so that one's prey animals don't suffer needlessly and in general be humane and fair about one's sport. It has taken on a major flavour of tradition and "the way one does things".

The problem is now that this tradition of course will get in the way of progress, even if that progress might improve the chances for a humane kill. A couple of days ago I read on the German hunting forum on which I hang out two comments from the same experienced hunter:

• He would never let anybody hunt on his hunt who used a rifle with a thumbhole stock. When questioned why he said "because this shows a mindset of wanting to push the envelope and trying to do things that are not good for the prey" - basically I think he meant wanting to shoot too far.
  
• He said that he had never been on a shooting range since he took his hunting exam in 1973!

So let me get this straight mate. Not only do you not practice, you also refuse to allow others to use things that increases their chance for a good kill? And that is "waidgerecht" how ?!?! I honestly cannot believe this. In a lot of other areas the man talks sense but the bigottry displayed here is beyond belief.